Design and Development of Semi-Direct Copra Dryer for Flat Terrain
The study was conducted to design and develop a semi-direct dryer for flat terrain. This dryer was designed to provide farmers an alternative to traditional and existing dryers particularly the semi-direct and indirect dryers. The components of the dryer were drying bed, plenum chamber, tunnel and firing chamber. It has a capacity of 2,000 nuts and the husks from the nuts were used as fuel for the dryer. The means of the average drying temperature on the front, middle and rear portions of the drying platform were 56.5 oC, 58.2 oC, and 58.4 oC, respectively. The average time of drying in bringing down the moisture content of the copra from 50% to 12% wet basis was 24 hours using only 66.30% of the husks. As of January 2017, the total cost of the dryer with shed was P 61,100.00 and the computed break-even cost was P 1.82/kg. The performance of the dryer is comparable to the existing dryers.
Dippon, C. & R. Villaruel. 1996. Copra dryers and copra drying technologies. In: Proceeding of the 33rd COCOTECH Meeting.Pp.79–106. Kuala Lumpur, Malaysia: Asia Paciﬁc Coconut Community (APCC).
Dumaluan, D. L. 1979. Drying Characteristics of Coconut Meat. M.S. thesis. University of the Philippines at Los Banos. Laguna
Escalante, M. C., J. R. Rosillo, and H. C. Celino. 1977. Coconut Drying Central Pilot Studies (Phase One). Terminal Report. PCRDF-Funded Research Project. Department of Agricultural Engineering and Applied Mathematics. VISCA, Baybay, Leyte.
Guarte, R. C., W. Mfihlbauer, M. Kellert. 1996. Drying characteristics of copra and quality of copra and coconut oil, Postharvest and Biology Technology.Vol. 9, Issue 3. December 1996. pp. 361-372
Henderson, S.M. and R.L. Perry. 1976. Agricultural Process Engineering. 3rd edition. The Avi Publishing Company, Inc. Westport, Connecticut. pp. 144-145.
Lozada, E.P., J. B. Benico, and V. R. Hao Chin. 1988. The Aflatoxin Problem: The driving force to improve Productivity of the coconut Industry. Proceedings of the 2nd National Coconut week Symposium on “The Coconut Farmers: A Look in to the future". PCA Auditorium, Diliman, Quezon City.
Lozada, P.E. 1987. The Los Banos Multi Crop Dryer. Philippine Coconut Research and Development Foundation, Inc. Quezon City, Philippines
Ly, T. and E.A. Hinay. 1979. Copra Drying. In Comparison Between the Recommended Practice and Farmers’ Practice of Splitted Nut Arrangement Before Drying. Annals of Tropical Research 1 (2): 75-81.
Raghavan, K. 2010. Biofuels from Coconuts. http://www.factfoundation.com/en/
Sudaria, E. E. 1993. Design and Development of Semi-direct Type Copra Dryer. Coconut Research and Development Journal. Asian and Pacific Coconut Community. Vol. 1X No. 1.
Woodroof, J.G. 1970. Coconuts: Production, Processing, Products. AVI Publishing Company. The University of Wisconsin – Madison.